ci: remove msan build

It doesn't work correctly. All componentes have to be instrumented for
msan to function properly. Changing linking mode to C++ exposes more
issues, valid as the memory comes from uninstrumented driver for
example.

.gitlab-ci.yml

@@ -178,24 +178,3 @@ sanitize:
                         -Dshaderc=enabled
         - ninja -C build
         - cd build && time meson test -t 5 -v --num-processes=1
-
-msan:
-    image: $IMAGE_UBUNTU_JAMMY
-    stage: sanitize
-    tags:
-        - gpu
-    variables:
-        MSAN_OPTIONS: 'exitcode=1'
-    script:
-        - env CC=clang CXX=clang++ CC_LD=lld CXX_LD=lld
-            meson build --buildtype debugoptimized
-                        --werror
-                        --default-library static
-                        -Dtests=true
-                        -Ddebug-abort=true
-                        -Dc_args='-DMSAN -DCI_MAXGL -Wno-deprecated-declarations'
-                        -Dglslang=disabled
-                        -Db_sanitize=memory
-                        -Db_lundef=false
-        - ninja -C build
-        - cd build && time meson test -t 5 -v --num-processes=1

src/convert.cc

@@ -16,7 +16,6 @@
  */
 
 #include <charconv>
-#include <cmath>
 #include <limits>
 #include <system_error>